Adapt to Elasticsearch fix.

Original Pull Request #2302
Closes #2171

Author: sothawo

src/main/java/org/springframework/data/elasticsearch/client/elc/RequestConverter.java

@@ -1252,9 +1252,15 @@ private <T> void prepareSearchRequest(Query query, @Nullable Class<T> clazz, Ind
 
 			Map<String, RuntimeField> runtimeMappings = new HashMap<>();
 			query.getRuntimeFields()
-					.forEach(runtimeField -> runtimeMappings.put(runtimeField.getName(), RuntimeField.of(rt -> rt //
-							.type(RuntimeFieldType._DESERIALIZER.parse(runtimeField.getType())) //
-							.script(s -> s.inline(is -> is.source(runtimeField.getScript()))))));
+					.forEach(runtimeField -> runtimeMappings.put(runtimeField.getName(), RuntimeField.of(runtimeFieldBuilder -> {
+						runtimeFieldBuilder.type(RuntimeFieldType._DESERIALIZER.parse(runtimeField.getType()));
+						String script = runtimeField.getScript();
+
+						if (script != null) {
+							runtimeFieldBuilder.script(s -> s.inline(is -> is.source(script)));
+						}
+						return runtimeFieldBuilder;
+					})));
 			builder.runtimeMappings(runtimeMappings);
 		}
 

src/test/java/org/springframework/data/elasticsearch/core/RuntimeFieldsELCIntegrationTests.java

@@ -37,9 +37,4 @@ IndexNameProvider indexNameProvider() {
 			return new IndexNameProvider("runtime-fields-rest-template");
 		}
 	}
-
-	@Override
-	public boolean newElasticsearchClient() {
-		return true;
-	}
 }

src/test/java/org/springframework/data/elasticsearch/core/RuntimeFieldsIntegrationTests.java

@@ -21,7 +21,6 @@
 import org.junit.jupiter.api.DisplayName;
 import org.junit.jupiter.api.Order;
 import org.junit.jupiter.api.Test;
-import org.junit.jupiter.api.condition.DisabledIf;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.data.annotation.Id;
 import org.springframework.data.elasticsearch.NewElasticsearchClientDevelopment;
@@ -41,7 +40,7 @@
  * @author cdalxndr
  */
 @SpringIntegrationTest
-public abstract class RuntimeFieldsIntegrationTests implements NewElasticsearchClientDevelopment {
+public abstract class RuntimeFieldsIntegrationTests {
 
 	@Autowired private ElasticsearchOperations operations;
 	@Autowired protected IndexNameProvider indexNameProvider;
@@ -61,7 +60,6 @@ void cleanup() {
 		operations.indexOps(IndexCoordinates.of(indexNameProvider.getPrefix() + "*")).delete();
 	}
 
-	@DisabledIf(value = "newElasticsearchClient", disabledReason = "todo #2171, ES issue 298")
 	@Test // #1971
 	@DisplayName("should use runtime-field from query in search")
 	void shouldUseRuntimeFieldFromQueryInSearch() {
@@ -78,7 +76,6 @@ void shouldUseRuntimeFieldFromQueryInSearch() {
 		assertThat(searchHits.getSearchHit(0).getId()).isEqualTo("2");
 	}
 
-	@DisabledIf(value = "newElasticsearchClient", disabledReason = "todo #2171, ES issue 298")
 	@Test // #2267
 	@DisplayName("should use runtime-field without script")
 	void shouldUseRuntimeFieldWithoutScript() {